neubauer



Feb. 14, 1956 c. A. N EUBAUER PLANE Filed June 7. 195.0

IN V EN TOR.

United States Patent PLANE Charles A. Neubauer, Baltimore, Md.

Application June 7, 1950, Serial No. 166,610

2 Claims. (Cl. 145-14) My invention relates to planes known as mortise,dado, router, rabbet and the like; and the primary object of theinvention is to provide a novel member which is adjustable forrestraining the bite of theblade before the cutting range of the bladeis controlled by the sole of the stock when cutting below the surface,secondly, to provide novel screw arrangement to facilitate adjustment ofthe restraining member and the blade relatively to each other and inrelation to the sole, thirdly, to provide means for clamping the bladeto the restraining member to retain their cooperative position whilethey are being adjusted to position relative to the sole to limit thecutting range of the blade.

Another object is to provide a clamping bow which is adjustable tooperate as a shaving breaker below the sole of the stock and also have arestraining effect on the blade.

Another object is to provide novel means for readily replacing the guideto its former adjusted position.

Another object is to provide novel means to overcome the binding effectof two sliding guide rods when adjusting or attaching a guide to theplane stock.

Another object is to provide graduations for the convenience ofadjusting the guide.

Another object is to provide novel means for replacing the spur to itsformer adjusted position.

Another object is to provide means for widening the sole surface at oneor both sides of the stock.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the novel construction,arrangement and formation of parts as will be hereinafter described,claimed and illustrated in the accompanying drawings, it beingunderstood'that changes in the precise embodiment of the inventionherein disclosed may be made within the scope of what is claimed withoutdeparting from the spirit of the invention.

In the accompanying drawings the preferred form of the invention hasbeen shown.

in said drawings, Fig. 1 is a side elevation of a plane embodying myinvention for restraining the bite of the blade, and showing the same asit is used for finishing a mortise for a hinge plate.

Fig. 2 is an enlarged section on line 22, Fig. 1, looking in thedirection of the arrows showing the adjustable guide in its operativeposition, and also showing graduations which may be provided for theconvenience of ad justing the guide.

Fig. 3 is a view similar to Fig. 2 with two supplemental soles inposition to widen the sole surface for routing or finishing dadoes, andalso showing some modification of a guide arm.

Fig. 4 is a modified form of a guide arm and a guide rod, and alsoshowing a slidable collar which may be used as an adjustable shoulder oneither style of guide rods.

Similar numerals refer to similar parts throughout the several views.

Sectional designation of the plane-stock is, the side 6,

ice

2 the sole 7, the frog 8, the handle 9 and the reinforcements 10.

For the purpose of restraining the bite of the planeiron or blade 11when cutting below the surface as in routing, finishing of dadoes,mortises for hinge plates and similar work, a novel member has beenprovided and will be referred to as a subsole 12, the proportion towhich the cutting edge of the blade 11 is adjusted to extend below thesubsole 12 determines the depth to which the blade 11 can cut with eachforward stroke of the plane before the cutting range of the blade 11 iscontrolled by the sole 7, whereas the proportion to which the blade 11is adjusted to extend below the sole 7, determines the depth to whichthe blade 11 will out below the surface of the board as shown in Fig. l.The subsole 12 also affords support for thin blades.

If desired an adjustable clamping bow 13 may be provided to impartrigidity to the blade 11 and be made adjustable to operate as a shavingbreaker, thus also restraining the bite of the blade 11. A longitudinalslot 14 is formed in the bow 13 in line with a longitudinal slot formedin the blade 11 and a shorter slot formed in the shank 15 of the subsole12, a screw 16 extends through these slots to engage a tapped holeprovided in the frog 8 to clamp these members in position.

If desired a screw 17 may be provided to extend through the slot 14 andthe slot formed in the blade 11 to engage a tapped hole provided in theshank 15 of the subsole 12 to hold the subsole 12 in its cooperativeposition with the blade 11 while they are being adjusted to positionrelative to the sole 7 to fix the cutting range of the blade 11.

If desired a screw adjustment may be provided to facilitate thepositioning of the subsole 12 relative to the sole 7, Fig. 1 shows anarrangement where the shank 15 marges into a tail piece 18 which isprovided with an opening to fit about the neck of the screw 19 to answerthe purpose. The blade 11 may have a tail piece 20 disposed at rightangle and provided with an opening to fit about the neck of the screw 21to facilitate adjustment of its cutting edge relative to the subsole 12.The screws 19 and 21 shown in Fig. 1 with a neck and shoulder arepreferable to ordinary screws which may be used instead if desired.

0bviously, by loosening the screw 16 and turning the head of the screw19, the subsole 12 can be moved upwardly or downwardly bringing theblade 11 and the bow 13 with it when the screw 17 is used -to clampthese members together. If desired the stock is provided withreinforcements 10 in which holes or sockets 22 are formed to receive theguide rods 23 to a limited depth where they are clamped in position bymeans of suitable screws 24. The reinforcements 10 are also providedwith bores 25 which extend through the side 6 wherein the rods 23 areadjustably held in position by means of suitable screws 26. The fence orguide 27 and the supplemental sole 28 are secured to the arms 29, whichare provided with laterally bored knobs 30 adjustably mounted on therods 23 and held in position by thumb screws 31. When the guide 27 isused, the rods 23 are slid into the sockets 22 to their limitedposition, the adjustment is made at the knobs 30 as shown in Fig. 2,whereas when the supplemental sole 28 is used, the rods 23 are slidthrough the bores 25 while remaining in their adjusted position at theknobs 30, thus bringing the supplemental sole 28 on an even plane withthe sole 7 as shown in Fig. 3, obviously it will be seen that the guide27 can easily be replaced to its former adjusted position by sliding therods 23 back into the sockets 22.

The arms 29 may be rigidly secured to the guide 27 in the usual way. Ifdesired, one of the arms 29 may be laxly connected to the guide 27 by arivet or a bolt 3 head 32 indicated by a dotted line as shown in Fig. 3,the connection is loose enough to allow some freedom of motion of thisarm 29 relative to the guide 27 and the supplemental sole 28 to overcomethe binding effect of two sliding guide rods. This rivet or bolt headmay be eliminated if desired, thus leaving one arm 29 unattached to theguide 27 but still held in position to brace the guide 27 for lateralpressure and also brace the supplemental sole 28 for downward pressure.

The rod 23 shown in Fig. 4 has a downturned portion as at 33 which maybe rigidly secured to the guide 27 or supplemental sole 28 for holdingthe same in position, or it may be laxly connected to the guide 27 orsupplemental sole 28, thus taking the place of a loosely connected arm29 as already explained, or it may remain unattached and serve as abrace for the guide 27 and supplemental sole 28. The slidable collar 34-shown in Fig. 4 may be used as an adjustable shoulder on either style ofthe rods 23 to limit their position in the through bores formed in theknobs 30 or the bores 25.

lf desired the rods 23 may be provided with graduation as shown in Fig.2 to indicate the lateral limit to which the blade may cut from theadjusted position of the guide 27 An adjustable spur 35 may be providedto cooperate with the guide 27 for the purpose of marking the width ofthe mortise for hinge plates and similar work, the spur 35 is providedwith a slot through which the screw 36 extends to clamp the spur 35 tothe side 6 in a guideway 37.

For expeditious replacement of the spur 35 to its former adjustedposition, the side 6 of the stock is provided with a laterally disposedcar 38 through which the screw 39 is slid to engage a tapped holeprovided in the lug 413 as shown in Fig. 1. After the spur 35 has beenadjusted to cut a gash with its point properly extended below thecutting edge of the blade 11 and clamped in position by the screw 36,the screw 39 is turned downward into the lug 40 until the head of thescrew 39 rests on the ear 38, the spur 35 may then be moved upward toits neutral position while the screw 39 remains in its adjusted positionin the lug 40 as shown in Fig. 1 where it will be seen that the spur 35can quickly be replaced to its former adjusted position by loosening thescrew 36 and sliding the spur 35 down until the head of the screw 39again rests on the ear 38.

For the purpose of fining dadoes or routing when a wide sole surface isdesired at both sides of the plane, a supplemental sole 41 is providedwith upright flanges 42 in which holes are bored through which thescrews 43 snugly extend and take into the side 6 of the stock to bringthe supplemental sole 41 on an even plane with the sole 7, as showninFig. 3.

Operation For mortising in hinge plates without the guide or spur, themortises are first cut in shallow with a chisel, notches are then cut inat both ends of the mortise with a chisel as deep as the mortise willbe, the mortise is then finished with the plane operated first in onedirection then in the other, as illustrated in Fig. 1, which also showsone of the notches referred to.

When the guide 27 and spur 35 are used the rods 23 are inserted into thesockets 22 to their limited position,

the adjustment for the guide is made at the knobs 30, the point of thespur 35 is adjusted to extend below the cutting edge of the blade 11,the plane is then used as a butt gage similarly pressing the point ofthe spur 35 down, then pulling the plane backwards to cut a gash for theside of the mortise, the spur 35 is then moved up to its neutralposition, notches are then cut as already explained, some of the woodmay be taken out with a chisel or plowed out with the guide 27 still inposition to assist in following a straight line, especially so when thespur 35 has not been provided, the guide 27 may then be disconnectedfrom the stock by loosening the screws 24, thus the adjustment for theguide 27 is retained at the knobs 30 for a repeated operation, or theguide may be moved up to its neutral position by sliding the rods 23through the bores 25, thus bringing the supplemental sole 28 up to itsoperative position on an even plane with the sole 7 of the stock towiden the sole surface and also retain the adjustment for the guide 27at the knobs 3%, as shown in Fig. 3. When there is a rabbet or a rabbetstrip in the door frame, the supplemental soles 23 and 41 are not usedto finish the mortise.

For dadoes, the two supplemental soles 28 and 4-1 are attached to thestock as shown in Fig. 3, the cuts for the sides of the dado are madewith a saw, some of the wood between these cuts is taken out with achisel, the dado is then finished with the plane.

I claim:

1. In a plane of the character described comprising a stock having asole with an opening formed therein, a restraining member having abearing face at the lower end, a support at the rear of said opening forholding the restraining member at an inclined position, said restrainingmember being movably arranged to project below the sole through saidopening, a plane-iron having a beveled cutting edge arranged immediatelyforward of the bearing face, and means for holding the bearing face andthe cutting edge in adjusted position relatively to each other and thesole, whereby the'cutting edge may variably project below the bearingface.

2. In a plane as specified in claim 1 with the further provision thatsaid means include two screws one to regulate the extent to which thecutting edge may project below the bearing face and the other to movethe restraining member and the plane-iron together to a position belowthe sole.

References Cited in the file of this patent UNITED STATES PATENTS

